This manual covers the S3 Thunderbolt, a sport-touring motorcycle produced in 2002. As a second-generation model derived from the XB platform, the S3T variant offers enhanced touring capabilities. Motorcycles, founded by Erik Buell, are recognized for their innovative engineering, particularly their unique frame designs, which often integrated the fuel tank or oil reservoir, and performance-oriented chassis components. The 2002 S3 Thunderbolt exemplifies this heritage, featuring a robust V-Twin engine and advanced braking systems for its time, making it a distinctive choice for riders seeking a blend of performance and long-distance comfort. This comprehensive workshop service and repair manual provides detailed information essential for the maintenance and repair of your S3 Thunderbolt. It covers critical areas including engine overhaul, lubrication, cooling, fuel system diagnostics, ignition, starter systems, transmission, and the electrical system. The manual offers step-by-step instructions, troubleshooting guides, and technical specifications, enabling owners and technicians to perform routine servicing, component replacements, and in-depth repairs. This resource is designed to help maintain the optimal performance and longevity of your motorcycle.